Part Number: 1821-1B (Compass,magnetic)Part Number: 1821-1C (Compass,magnetic)Part Number: 1822-1B (Compass,magnetic)Part Number: 1826-1A (Compass,magnetic)Part Number: 1832-3A (Compass,magnetic)Part Number: 1833-1A (Compass,magnetic)Part Number: R88-C-783 (Compass,magnetic)Part Number: R88-C-800 (Compass,magnetic)Part Number: R88-C-845 (Compass,magnetic)